2540408799 has 4 divisors (see below), whose sum is σ = 3387211736. Its totient is φ = 1693605864.

The previous prime is 2540408777. The next prime is 2540408803. The reversal of 2540408799 is 9978040452.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2540408799 - 2¹³ = 2540400607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540408599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423401464 + ... + 423401469.

It is an arithmetic number, because the mean of its divisors is an integer number (846802934).

Almost surely, 2^2540408799 is an apocalyptic number.

2540408799 is a deficient number, since it is larger than the sum of its proper divisors (846802937).

2540408799 is an equidigital number, since it uses as much as digits as its factorization.

2540408799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846802936.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 2540408799 is about 50402.4681836118. The cubic root of 2540408799 is about 1364.4821838715.

The spelling of 2540408799 in words is "two billion, five hundred forty million, four hundred eight thousand, seven hundred ninety-nine".